[root@gfs1 ~]# curl  -I http://www.51cto.com
HTTP/1.1 200 OK
Date: Tue, 24 Nov 2009 09:43:26 GMT
Server: Apache
Accept-Ranges: bytes
Content-Length: 145766
Content-Type: text.html
 
 
[root@gfs1 ~]# curl  -I http://blog.s135.com/
HTTP/1.1 200 OK
Server: nginx/0.8.20
Date: Tue, 24 Nov 2009 09:42:20 GMT
Content-Type: text.html; charset=utf-8
Connection: keep-alive
Vary: Accept-Encoding
X-Powered-By: PHP/5.2.9
Expires: Mon, 26 Jul 1997 05:00:00 GMT
Cache-Control: no-store, no-cache, must-revalidate
Pragma: no-cache